Lewis goodwin and samuel a



.GOODWIN & WEST.

Ore Concentraton- Patented Sept-17,1867.

iii/21145566 gutter tatris gaunt @ffitc.

LEWIS GOODWIN AND SAMUEL A. WEST, OF SAN FRANUISGO, CALIFORNIA.

Letters Patent No. (i8,978, dated September 17, 1837.

IlttlPROVED ORE-GO NOENTRATOR.

TO ALL WIIOM IT MAY CONCERN:

Be it known that we, LnwIs Goonwrx and Ssnunr. A. lVEST, of San Francisco, county of San Francisco, and State of California, have invented certain new and useful improvements in Concentrators, and we do i hereby-declare thefollowing description and accompanying drawings are sufficient to enable any person skilled i in the art or science to which it most nearly appertains to make and use our said invention or improvements without further invention or experiment.

The natnreof our invention is to provide an improved concentrator for concentrating sulphurets contained in ores, and consists in a circular concave disk, with rifllcs or grooves, the machine having a continuous rotary motion. The ore or pulp with water being received at the centre is carried by bent tubes to near the centre,

and from thence by centrifugal force to the periphery of the disk, the heavier particles settling in the rifilcs in its passage, and the sand and debris,-being separated by the current and constant agitation, are carried out by means of a trough or sluice placed transversely across the disk to the centre, and are discharged through openings into a stationary circular sluice or box below, and the sulphurets are discharged at the periphery of the disk by means of a plough into another stationary. circular sluice below.

Other devices have been employed, circular in form, with a groove for retaining the sulphurets or other heavy matter until the sand has become separated from them, and their discharged at the peripheryybut thosc machines depended upon a cam or eccentric motion for separating the sand and debris from the, valuable portions, and oftentimes the machines must be stopped and assistance rendered in order to carry forward or proceed with the work. i i I 1 It is proposed by the use of our machine that a constant rotaryrmotio'n shall be kept up, and a constant charging and discharging shall be had, while the machine is in motion, by means of scrapers, ploughs, and i agitators, and discharge valves, the whole arranged with a view of keeping the lighterparticles, such as sand and debris, suspended in the water, so that they may be carried out with it, and the sulphurets be impacted or settled in the riflles.

In order to more fully illustrate-and describe our invention, reference is had to the aceompanyingdrawings and letters marked thereon, of which- Figure 1 is a sectional elevation.

Figure 2 is a perspective view of the discharge trough and adjustable bar. Figures 3, 4, 5, 6, 7, and 8 represent details of the machine.

A A represents a pan or disk, slightly concave to near the centre, which is elevated, forming a convex centre, 13, which is surrounded by a deep groove perforated .by holes. The centre of the pan is surrounded by, a rim, and around the outer circumference is an inclined plane, 0, which may be covered with an amalgamated copper plate. From this point to near the pcriphcry'of the pan are iuadecircular ,rifiles g g g g, the outer one,

or 9, being an inclined plane, the whole being surrounded by a rim- The pan rotates above a circular stationary trough, G, by means of a vertical shaft, 2, actuated by bevelled gearing 7 and 8. Beneath thccentre of the pan is placed a circular trough, t, which surrounds the bevelled wheel-8,.and has discharge openings, 'S, for discharging the sand or debris and water, which prevents it from falling upon the machinery. The centre of the pan 13 is slightly elevated, on the top of which is placed a stationary cross-bar, supporting trough E, box L, and plough O, the opposite end being a plain bar, L. Underneath both box and bar are secured agitators for agitating the sulphurets lodged in the riilles of the pun. To one end of the bar 1) a trough or sluice, E, is

attached, which extends frointhc central gro ovc to the periphery of the pan, having a curved end or scraper, ,E, which reaches to near the surface of the plane. I The month of this trough is closed by a gate, F, jointed and pivoted to an arm, F. The trough or sluice is for the purpose of conveying the sand and debris to the. 1

central discharge. A bar, L, .is attached to the trough E, to be raised and lowered by set-screws, so as to admit more or less of the currcnt beneath it, or create eddies in front of it in passing around. In front of the sluice or trough is a plough, 0, having curved teeth or scrapers, which operate. in the rifiles g g. This plough is attached to the bar D by anj nrm, P, and when not in use is raised up so as to be out of the pulp. By this means the sulphurcts are carried to the periphery of the pan, and from thence through openings in it to.t he lower ledge or rim, The sulphurets and sand arerceived with water intot-hc cup H, and passthrough the curved tubes 1 l on to the copper plate (3, and by ccntrifugalforce the sand and debris and lighter particles are carried to the periphery of the pan, while the heavier particles will full into the circular rifiies, and in rotating. the agitators, under the arm D and sluice IE, will stir up the lighter particles in the rifllcs, should any remain, which. will he carried off by the current through the sluice, cncl be discharged through the centre of the pun. For lischarg'ingthc sulphurcts one or more openings is' made in the outer rim of the pun, provided with o valve, 4, and spring, 5, which is oponecl and closed by coins K onril J attached to an upright post at the side of the pan, and when it is tlcsiruhlc to keep the valve closoil-cntirol the cum K is moved buck by an upright bar curl-(ices not uctuutc the spring y In its operations, and in order to clean up the sulphurcts, the flow of ore is stopped, tho gate-F closed, and stream of clean water admitted through the cup H, and the bar L will create a circular currcnt in front ofit, by means of which, and tho agitators under the bur 1), they will have a tendency to stir up any remnining saml, which wiill ccztrried out with the water through the sluice E, after which the plough 0 may he lowered Hill the valve sot inopcration, which will carry the sulphurets to the periphery of the pan to be discharged into the lower lodge or circular trough and through openings M, by means of scrapers N, intou receptacle-beneath,

Having thus described our invention, what we claim, curl tlesirc to secure by Letters Potent, is-

l. The concave rotary pan A A, with circular riifics g g g g g, having un clcvution tow l he periphery of the pun, suhstn-ntiuliy'us and for the purposes described. 7

2. The discharge-box 13, receiving the discharge at tho pcripheryyund discharging towarcl the cent-re, having tooth. or agitators attached to it for'opcrating in the rifiles, curl movable hztr L to act on the pulp an l water, and the gate F for cutting oil the discharge, substantially as (lcscrihcl- 3. The plough O, valve 4, spring 5, cams K and J, or their equivalents, suhstuntiully as described for tho purposc sctfcrth,

4. The stationary circular troughs R, for receiving the sand \lHltlClOYlS, and G for receiving the sulphurcts, and the scrapers N, nttachcil to the rotary pan and working within the troughs R null G, substantially as described. I

5. We claim the chore-described parts when employed separately or in combination, for the purposes El:OClilC(l.

In witness whereof we have hereunto set our hands and souls.

L. GOODWlN, [1, S. A. WEST. [1,.

Witnesses:

W. M. SMITH, G-Us. A. MANTZ. 

